ABSTRACT
In order to understand the situation of schistosomiasis in Fujian Province, the surveillance and field survey data of 16 counties (cities or districts) were statistically analyzed from 2003 to 2008 according to the national and provincial surveillance protocols. The snail areas were 69 400 m~2 in 2003, and 506 700 m~2 in 2004, then decreased to 57 700 m~2 in 2008 after the snail control in 2005 and 2006. Serological examinations were conducted in 18 000 people, among which 5 412 people were the mobile population from schistosome-endemic areas, and 110 persons were positive, among which 8 persons had eggs and miracidia in their stools, among 7 885 appendix samples, Schistosoma japonicum eggs were found in 8 samples of the patients who came from the o-riginal endemic areas. By the stool examination, 2 709 head of farm cattle in the region with snails were not found infected with Schistosoma japonicum. It is suggested that the areas of residual snails are large and widespread, and the imported patients are found frequently, so the danger of schistosomisis transmission still remains.
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Objective To explore the effects and relationship of tert-butyl hydroperoxide (t-BHP) and hypoxia in transient ischemia-like attack (TIA-like) in Kunming mice.Methods Fifty-six mice were randomly divided into normal saline group (group A), t-BHP group (group B), t-BHP plus hypoxia group (group C) and model group (group D). Fourteen mice in group D were injected t-BHP (0.11 mol/L, 10 ml/kg) through tail vein with an interval of 24 hrs to induce TIA-like attack. The average time of TIA-like was ( 3.7? 1.1) days, and this time was used as experimental evidence to collect blood sample in other groups. Hemorheological indexes before TIA-like attack were observed in different experimental conditions.Results Compared with group A, the whole blood viscosity at shear rate 100S-1, 1S-1 and Fibrinogen were significantly increased in group B and group C (all P
ABSTRACT
Objective To provide the basis for the differentiation with similar species of intestinal flukes through observing the figure of Haplorchis pumilio. Methods Adults of H. pumilio were collected from the intestine of the cat which was infected with the encysted cercariae of H.pumilio for 45 days. The worms were observed after staining. Eggs and metacercariae of H.pumilio were collected and examined for their shape, size and morphological characteristics. Pseudorasbora parva, the fish host, was examined for the parasitized sites of metacercariae. Results The principal characteristics of the adults is the acetabulum degradation. There are only the genital sucker with 44-48 hamuli. The average measurement of eggs is 31.2?16.7 ?m with a smooth shell. Its aceromion is not evident. The average diameter of metacercariae is 168.5 ?m. There are squamous spines on metacercaria. The metacercariae only parasitize in the muscle between the basis of the fin and the fish body. The average measurement of metacercaria cyst is 445?95?m, with squamous spines on the body surface. Hamuli are found on the genital sucker of metacercaria cyst. Conclusion The morphological figures and parasitic sites of metacercaria, the genital sucker of the adult, and the number and form of the hamulus on the genital sucker provide basis for distinguishing H. pumilio from other intestinal flukes.
ABSTRACT
Objective To make etiological and epidemiological investigation on the infection of Angiostrongylus canto-nensis in 8 pupils in Changle City. Methods (1) CSF of patients was examined with the conventional method to detect pathogens and eosinophiles. (2) The fecal samples of wild rodents were collected from the spot and examined microscopically to discover the first stage larvae of A. cantonensis. (3) Snails (Pila gigas) were collected in the spot. The smashed head tissue was examined for the third stage larvae of A. cantonensis. (4) The patient's clinical symptoms and physical signs were recorded with an emphasis on central nervous system. Results (1) Two larvae of the third stage of A. cantonensis were found in CSF of one patient. Eosinophiles occupied 68% of the cell number in average (ranged from 47% to 83%) in CSF of the 8 patients. (2) The infection rate of the first stage larvae of A. cantonensis was 39.3% (44/112) in feces of the rodents. (3) The infection rate of the third stage larvae of A. cantonensis was 40. 0% (82/205) in the snails. (4) Major clinical manifestations in the 8 patients included: severe headache(8/8), dizziness(8/8), nausea(8/8), vomiting(8/8), lethargy(7/8), lower limb hypody-namia(7/8). Conclusion The confirmation of severe infection of A. cantonensis in 8 child patients demonstrated that a natural nidus of angiostrongyliasis is present in Chengle City.